Gas-engine.



J. G'. WILLET.

GAS ENGINE. APPLIGATON FILED APR. 28.1906.

Patented M3112, 1909.

` "ETS-SHEET 1.

7kg-1 65:56 -lrI J.'G. WILLET.

GAS ENGINE.

APPLICATION FILED AYR.28,1906.

'Patented Mal. 2, 1909.

C/LUFII, OF BUFFALO/NEW YGRK.

T ISIDORE MClAEL, EIGHTEEN -ONEHUNDREDTHS TO EDWARD MlGlll GNE-HUNDREDTHS TO CLARK L. NGHAM, AND ElGHTEEN ONE-HUNDREBTL-1 GAS-E EIGENE no. sienes.

Specification oi Letters Patent. Patented March 2,. 53639.

Applicetonled .April 28,1906. Serial No. 314,259.

v lo The object of my invention is to provide the engine with a reversible inlet valve which is ositive and reliable in action and permits in charges of air or explosive mixture to be delivered into the crank chamber, in order l to obtain. the highest efficiency. In the accompanying drawings consisting of 2- sheets: Figsre l is an end elevation oi a two cycle engine embodying the invention. Fig. 2 is a sectional elevation thereof. F ig. 3 is a 2.0 side view of the saine. Fig. i is a detached interior view, on an enlarged scale, of the plate `which carries the inlet valve. Fig. 5 is- -a detached interior or face view of the valvedisls, on. an enlarged. scale. F ig. 6 is a similar view oi the rear valve-disk.

Similar letters of reference indicate corresponding parts throughout the sever-al views. l A indicates the engnfie-cylinder which may have 'the usual water jacket A1, B is the pis ton connected with the crank shaft C by the customary pitnian C1, and D is the crank or chamber into which the lower end of the cylinder pens.

E is a longitudinal by-pa'ss or transfer pas- 35 sage arranged in the wall of the cylinder and extending from the crank chamber up :validly-*to about the middle of the cylinder Where/itl opens laterally into the same, as

/nliwnfat e; Opposite the upper end of this i0 assage, the'cylinder is vprovided with an eze.

5;' is a pipe or inlet for supplying suitable charges oi' oil or other hydrocarbon fuel into the cylinder. This pipe preferably enters the side of the cylinder-immediately above or adjacent to the upper end ol the `ccnnecting passage E, so that the incoming oil meets and commingles with the air issuing into the cylinder from the upper end oi said passage. @il is supplied to the inlet pipe gby any suitable means. ln the construction shown in the drawings, a suitable pump Gf is employed for purpose, the plunger G1 of which is moved in one direction. by an internal spring, not shown, and-in the oppositedirection by a cam or eccentric lli secured to a countershaft H supported on the crank chamber. This countershaft is driven from the main shaft by spur gears lil, h2 and an in:

terniediate idler gear h.

l is a baeplate mounted upon the upper end ofthe piston B at the side thereof facing. the passage E and adapted to stand in front of or extend across the oil inlet. g and the delivery end oi' said passage when the' piston uncovers the saine, as shown in Fig. 2. This baille plate prevents the explosive mixture from being expelled directly through the eXh-aust port f and also serves as an abutn ment against which the incoming oil is sprayed and by which it is vaporizec ltis well known that the best results are obtained when the mixture ofv the air and hydrocarbon takes place at a high temperature. ln my improved construction, this mixture is effected Within the central or .u'i ser portion of the cylinder where the te1nperature is comparatively high and uniform, thus obtaining a better and more efficient explosive compound than when the mixture takes place in acounecting assage, such as E, or in .a separate chamber periodically placed. in communication with the cylinder. j is an inlet port for air or a mixture oi air and gasolene which leads to the closed crank chamber and is preferably formed in a 4removable plate J secured in an'opening in one side ol the chamber. This inlet is connected .with a branch or hanged pipe J1 with which the outlet of a carbureter K. ol` any suitable construction is adapted to communicate, the, carbureter being indicated by dotted lines in Eig. 2. The port 7' is controlled 4by an inlet valve, preferably composed of a pair of ron tary disks L, L1 mounted side by side on a transverse shalt l journaled in the removable lila? in the drawings, these shoulders are formed by recessing the edge of the front valve-disk,

said edge being preferably inclosed by' a'4 marginal flange 'm2 on the rear disk; The

front disk has a segmental port-n arranged to register with the inlet port j of the crank chamber lonce during everyv revolution of the shaftl, the valve port shown in the drawings being -divided by strengthening webs fnl. The rear valve disk L14 is provided on diametrically opposite sides with similar orts n2, n3, one of which is ada ted .to re 'is-4 P P g ter with the port n of the other valve disk, so long as the engine runs forward, while the other port is adapted to register with the port n when the ingine is reversed. The

' ports n2, n3 may lalso be divided byestitening webs, as shown in Fig. 6.

o is a spring interposed between the two valve disks and servingto closely seat the front disk L againstthe flat inner side of the plate J; This spring is seated in an annular geared with the valve-shaft by bevel'gears p, p1 and which-is in turn driven from the gear wheel h2 of the crank shaft by spur gears ,The parts are so timed and the coperating ports of the valve disks L, L1, are so ar-l ranged relatively to the inlet port j, that the latter is opened during the .upward-stroke and closed during the downward stroke of the iston. T e o eration ofthe engine is as follows: When oi is used as fuel, the supply of gasolene to the carbureter is cut oil and "only air is allowed to pass through the same and the inlet'yinto the crank chamber. 'Assuming oil to be used and the'engine to be started, air is drawn through the inlet port y' and the registeringv orts oi' thevalve disk L, L1 on the upstro re ofthe piston. 0n the downstroke of the piston, the air in the crank chamber is compressed until the reaches the lower end of its stroke, w en it uncovers the upper end of the passage E, allowing the compressed air inthe crank ch amber to rush into the cylinder above the -piston. tion 'of this air, a proper predetermined charge of oil is delivered'by the pump G into the cylinder through theinlet pipe g. The stream of oil iss rayed by contact wit-h the opposing baille p ate l and atomizedby the charge of incoming air encountered lby. it, while the bathe. plate which becomes comparatively' hot vaporizes the oil'. 0n the up-stroke of the piston the upper end of thepassage. E and the exhaust port f are-covered andthe mixtureabovethe .piston iscom iston During the admission of the last por-l pressed and finally ignited in a manner com-4 So long as the mon to this typeof engines. engine runs forward, the registering' relat1on between the port of the front valve disk L and the operative port'of the rear disk L remains undisturbed, the two disks acting practically as one .part .with a single ort. When, however, the engineis reverse. vlby' changing the time of ignition in a well known valve, the pin mfof the rear disk moves over the recessed edge of the front' disk, until it strikes the previously inoperative shoul- -der m1 of the latter, when 'the front disk isj again com elled to'rotate with the .rear or-fvv driving dis of the valve. Asshown in Fig.'

5,' the' shoulders 'are arranged at opposite' sides of the valve disk.

In order 'to insure the admission'of a full charge of air into the crank chamber at 'every revolution of, the valve, the ports of the valve disks are considerably longer than. the inlet port j, the ports shownxadmitting air during' nearly a halfturn of the crank.

- When asolene is employed instead of oil,

the oilin et `g is not used and the'explosive mixture is furnished by the carbureter.

' My improved inlet valve is not only pesitive and,reliabler in operation, but by 'permittingf'ull charges of air or mixture to enter the crank chamber enables the engine tofbe run at a high speed.

To prevent injuryto the engine in case of a back explosion in the"crank chamber, 'the` chamber is provided with a suitable safety valve Q. In the construction shown in the drawings, thisv valve is carried by a removable plug R screwed into an opening in the wall ofthe crank chamber. longitudinal passages 1' for the escape of the gases, and acentral bearmg for the stem of the valve Q which latter closes against a seat g at the outer end of the plug.

This plug has The valve isl held closed by a spring s applied toits stem loci' between the inner end of said bearing and a l' collar s1 on thestem. This spring is of such power or tension as to prevent opening ofA f the safety valve under normal pressure, but to permit opening thereof under an excessive or abnormal pressure liable to cause injury orbreakage of the engine.

I'claim as my invention: i .1. The herein describedinlet valve for ga engines, which consists in two rotary parts, one of said parts havin a portadaptedto. periodically register witih the irrlet passage;

eieeee egfiefiei, e pieton, e crank. shaft, e, erenk ene having en inlet e fevoluble valve '1203: eennoiiing seid inlet eoinposed. of two 1 we, of seid. members having e port i 'to pei'iodieeiiy iegie'tei with seid L,ne other erregrined to move on the eene' the irst, but covering only n,

.seme peet @if the ineens for moving seid velve em 'aege'zhei but permitting the eeeenfl. ,y the engine to nieve en the niet, 'iie eoineetion between the Amvo being .eu-eh h-ee the second memoe will not eovei the govt die iyst membe' when the engine is running in either direetion, sube Stentie'ly es described.

3. En e. ges engine, the eombinetonof e eyindei, e piston, a, @Tank shaft, e, crank eienbef iving en inlet, e reversible valve eonmeing :d inlet and Comprising a, movable 7 having e port eienged ite g riodieeiy with seid inlet .end e second member having ports one or the oiei' of which is ei'ianged to egister with e. in engine, the combination of e eiindei, e, piston, e creek shaft, e crank aber having enviniet, e, 'eveisibie valve eid nie end comprising e im ing port arranged io :register ei; mid. second oteiy disk bev g is, one arranged to egis'e inlet ,virieifi the engine runs fofw'e-d eine? te registenthejrewith When the wie port e? 'meinst-named veive-meinberengine funs beeimverd, disk being eepebie of movement independen of 'i'ie disk, end means for teens.; iom ehe meek-shaft 15e .ff diei-, substenieiiy es eetv foi di.

5., In e ges engine, the 'ombiebien of e, eylinfei, piston, @MAK 'Nek chamberiievig en inie, valve eonfoiiing eeiiinier, roteiy shet peni side by eide ebenen, one of f loose on the shaft eed having pei? of ie ve'eing ehouiers end. e port eiifmged 'to register pefiof eeiiy Wiel seid ine, the othei disk being se' e piejeegion adapted. ee engage e'bi'iei ef seid. sbonk egcs. end peil of pois, one ei'i'enged be regi'tei' with. the port of ohesifnemed vaivedisk when bhe engine rune forward and the other eii'enged to 'egiete .heewith when the eng"'"'e runs beekweyd, tieiy es eeo orzh.

'In gee engine, the eonieinetion of a eyiindei, e. piston, a, treillis siieft, e erenk named.

ehembe having inlet, end e revesible subeentieily es Asexi o'h.

`W1tness my iii-md this dey 9i A piii,

' een i "v/Tnesees C. E. M. GRAHAM.

motion ed to seid shaft end. having v Home?. 

